[OMPI users] Problem running an mpi applicatio​n on nodes with more than one interface

2012-02-16 Thread Jingcha Joba
Hello Everyone, This is my 1st post in open-mpi forum. I am trying to run a simple program which does Sendrecv between two nodes having 2 interface cards on each of two nodes. Both the nodes are running RHEL6, with open-mpi 1.4.4 on a 8 core Xeon processor. What I noticed was that when using two o

Re: [OMPI users] Problem running an mpi applicatio​n on nodes with more than one interface

2012-02-17 Thread Richard Bardwell
! - Original Message - From: Jingcha Joba To: us...@open-mpi.org Sent: Thursday, February 16, 2012 8:43 PM Subject: [OMPI users] Problem running an mpi applicatio​n on nodes with more than one interface Hello Everyone, This is my 1st post in open-mpi forum. I am

Re: [OMPI users] Problem running an mpi applicatio​n on nodes with more than one interface

2012-02-17 Thread Rolf vandeVaart
running an mpi applicatio​n on nodes with more than one interface I had exactly the same problem. Trying to run mpi between 2 separate machines, with each machine having 2 ethernet ports, causes really weird behaviour on the most basic code. I had to disable one of the ethernet ports on each of the

Re: [OMPI users] Problem running an mpi applicatio​n on nodes with more than one interface

2012-02-17 Thread Jeff Squyres
e over the two of them. > > Rolf > > > From: users-boun...@open-mpi.org [mailto:users-boun...@open-mpi.org] On > Behalf Of Richard Bardwell > Sent: Friday, February 17, 2012 5:37 AM > To: Open MPI Users > Subject: Re: [OMPI users] Problem running an mpi applicatio​n

Re: [OMPI users] Problem running an mpi applicatio​n on nodes with more than one interface

2012-02-17 Thread Jeff Squyres
ary 16, 2012 8:43 PM > Subject: [OMPI users] Problem running an mpi applicatio​n on nodes with more > than one interface > > Hello Everyone, > This is my 1st post in open-mpi forum. > I am trying to run a simple program which does Sendrecv between two nodes > having 2 interfa

Re: [OMPI users] Problem running an mpi applicatio​n on nodes with more than one interface

2012-02-17 Thread Richard Bardwell
Yes, they were on the same subnet. I guess that is the problem. - Original Message - From: "Jeff Squyres" To: "Open MPI Users" Sent: Friday, February 17, 2012 4:20 PM Subject: Re: [OMPI users] Problem running an mpi applicatio​n on nodes with more than one inter

Re: [OMPI users] Problem running an mpi applicatio​n on nodes with more than one interface

2012-02-17 Thread Jingcha Joba
lem. > > - Original Message - From: "Jeff Squyres" > To: "Open MPI Users" > Sent: Friday, February 17, 2012 4:20 PM > Subject: Re: [OMPI users] Problem running an mpi applicatio​n on nodes > with more than one interface > > > > Did you have b

Re: [OMPI users] Problem running an mpi applicatio​n on nodes with more than one interface

2012-02-17 Thread Jeff Squyres
On Feb 17, 2012, at 11:59 AM, Jingcha Joba wrote: > Also, I am looking for a good way to start understanding the implementation > level details for OpenMPI. Can you point me to some good source? > (PS: To start with, I have already read the FAQ section) Unfortunately, there isn't a lot of good